diff --git a/osu.Game.Rulesets.Karaoke.Tests/Skinning/KaraokeHitObjectTestScene.cs b/osu.Game.Rulesets.Karaoke.Tests/Skinning/KaraokeHitObjectTestScene.cs
index 8064effab..305b8b803 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Skinning/KaraokeHitObjectTestScene.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Skinning/KaraokeHitObjectTestScene.cs
@@ -22,7 +22,7 @@ public abstract class KaraokeHitObjectTestScene : KaraokeSkinnableColumnTestScen
         [BackgroundDependencyLoader]
         private void load()
         {
-            SetContents(() => new FillFlowContainer
+            SetContents(_ => new FillFlowContainer
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneColumnBackground.cs b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneColumnBackground.cs
index 9c9896ddc..a1f2081d6 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneColumnBackground.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneColumnBackground.cs
@@ -15,7 +15,7 @@ public class TestSceneColumnBackground : KaraokeSkinnableColumnTestScene
         [BackgroundDependencyLoader]
         private void load()
         {
-            SetContents(() => new FillFlowContainer
+            SetContents(_ => new FillFlowContainer
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneDrawableJudgement.cs b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneDrawableJudgement.cs
index 0e1234b98..3a043a116 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneDrawableJudgement.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneDrawableJudgement.cs
@@ -18,7 +18,7 @@ public TestSceneDrawableJudgement()
         {
             foreach (var result in EnumUtils.GetValues<HitResult>().Skip(1))
             {
-                AddStep("Show " + result.GetDescription(), () => SetContents(() =>
+                AddStep("Show " + result.GetDescription(), () => SetContents(_ =>
                     new DrawableNoteJudgement(new JudgementResult(new HitObject(), new Judgement()) { Type = result }, null)
                     {
                         Anchor = Anchor.Centre,
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneHitExplosion.cs b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneHitExplosion.cs
index fa43768a5..ea7afa592 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneHitExplosion.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneHitExplosion.cs
@@ -45,7 +45,7 @@ public TestSceneHitExplosion()
         [BackgroundDependencyLoader]
         private void load()
         {
-            SetContents(() => new NotePlayfieldTestContainer(0)
+            SetContents(_ => new NotePlayfieldTestContainer(0)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneLyric.cs b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneLyric.cs
index 7e2530117..050bf1eed 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneLyric.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneLyric.cs
@@ -21,7 +21,7 @@ public class TestSceneLyric : KaraokeSkinnableTestScene
     {
         public TestSceneLyric()
         {
-            AddStep("Default Lyric", () => SetContents(() => testSingle()));
+            AddStep("Default Lyric", () => SetContents(_ => testSingle()));
         }
 
         private Drawable testSingle(bool auto = false, double timeOffset = 0)
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneNotePlayfield.cs b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneNotePlayfield.cs
index e2546c4ab..18145c688 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneNotePlayfield.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Skinning/TestSceneNotePlayfield.cs
@@ -11,7 +11,7 @@ public class TestSceneNotePlayfield : KaraokeSkinnableColumnTestScene
         [BackgroundDependencyLoader]
         private void load(RulesetConfigCache configCache)
         {
-            SetContents(() => new KaraokeInputManager(new KaraokeRuleset().RulesetInfo)
+            SetContents(_ => new KaraokeInputManager(new KaraokeRuleset().RulesetInfo)
             {
                 Child = new NotePlayfield(COLUMN_NUMBER)
             });
diff --git a/osu.Game.Rulesets.Karaoke.Tests/osu.Game.Rulesets.Karaoke.Tests.csproj b/osu.Game.Rulesets.Karaoke.Tests/osu.Game.Rulesets.Karaoke.Tests.csproj
index 3200f8499..b89127e89 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/osu.Game.Rulesets.Karaoke.Tests.csproj
+++ b/osu.Game.Rulesets.Karaoke.Tests/osu.Game.Rulesets.Karaoke.Tests.csproj
@@ -14,7 +14,7 @@
   </PropertyGroup>
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
     <PackageReference Include="NUnit" Version="3.13.2" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
diff --git a/osu.Game.Rulesets.Karaoke/osu.Game.Rulesets.Karaoke.csproj b/osu.Game.Rulesets.Karaoke/osu.Game.Rulesets.Karaoke.csproj
index 3e9814f5a..60d44b8f0 100644
--- a/osu.Game.Rulesets.Karaoke/osu.Game.Rulesets.Karaoke.csproj
+++ b/osu.Game.Rulesets.Karaoke/osu.Game.Rulesets.Karaoke.csproj
@@ -15,7 +15,7 @@
     <PackageReference Include="Octokit" Version="0.50.0" />
     <PackageReference Include="osu.Framework.KaraokeFont" Version="1.8.3" />
     <PackageReference Include="osu.Framework.Microphone" Version="1.2.0" />
-    <PackageReference Include="ppy.osu.Game" Version="2021.524.0" />
+    <PackageReference Include="ppy.osu.Game" Version="2021.602.0" />
     <PackageReference Include="LyricMaker" Version="1.1.1" />
     <PackageReference Include="NicoKaraParser" Version="1.1.0" />
     <!--install because it might cause "Could not load file or assembly" error, might be removed eventually-->